Table 3.
Dose comparisons in targets and normal tissues.
| Patients | 1st kVCBCT (Gy) | kVCT (Gy) |
Difference (%) |
|
|---|---|---|---|---|
| NK-T lymphoma (patient1) |
1PTV: mean dose | 51.03 | 51.28 | 0.49% |
| 1Right-eye: mean dose | 11.68 | 11.76 | 0.70% | |
| 1Left-eye: mean dose | 10.54 | 10.58 | 0.37% | |
| 1Spinal cord: max dose | 47.14 | 47.65 | 1.07% | |
| 1Whole body: max dose | 59.18 | 59.44 | -0.43% | |
| NPC (patient2) |
2GTV: mean dose | 67.8 | 67.78 | -0.03% |
| 2CTV: mean dose | 64.9 | 64.89 | -0.02% | |
| 2PTV: mean dose | 63.76 | 63.78 | 0.03% | |
| 2Brain Stem: max dose | 53.83 | 54.36 | 0.98% | |
| 2Spinal cord: max dose | 32.85 | 32.73 | -0.34% | |
| 2L-parotid: mean dose | 34.92 | 34.11 | -2.37% | |
| 2R-parotid: mean dose | 33.38 | 32.91 | -1.41% | |
| 2Whole body: max dose | 70.73 | 70.12 | 0.87% | |
| Brain Tumor (patient3) |
3CTV: mean dose | 61.85 | 61.84 | -0.02% |
| 3PTV: mean dose | 60.64 | 60.57 | -0.11% | |
| 3Brain: max dose | 50.13 | 50.02 | -0.22% | |
| 3Left-eye: mean dose | 19.42 | 19.4 | -0.13% | |
| 3Right-eye: mean dose | 9.94 | 9.64 | -3.15% | |
| 3Whole body: max dose | 67.21 | 67.66 | 0.66% | |
Dose comparisons of the first kVCBCT to the planning kVCT in targets and normal tissues for the three clinical cases (NK-T lymphoma, NPC and Brain Tumor). The difference of maximal dose in tumor is 0.49% and in normal structures are -3.15%. The numbers before the contours are the indexes of patients, 1PTV means the PTV in patient1.